<template>
  <div class="upload-file">
    <el-upload
      multiple
      :action="uploadFileUrl + fileUpLoadPath"
      :before-upload="handleBeforeUpload"
      :file-list="fileList"
      :limit="limit"
      :on-error="handleUploadError"
      :on-exceed="handleExceed"
      :on-success="handleUploadSuccess"
      :show-file-list="false"
      :headers="headers"
      class="upload-file-uploader"
      :on-progress="uploadVideoProcess"
      ref="upload"
    >

      <!-- 上传按钮 -->
      <!-- <el-button size="mini" type="primary" @click="ChooseVideoData()">选取视频</el-button> -->
      <!-- 进度条 --><!-- v-if="progressFlag" -->
      <el-progress v-if="progressFlag" :percentage="loadProgress" style="width: 200px;top: 10px;float:right;"></el-progress>
      <!-- 上传提示 -->
      <div class="el-upload__tip" slot="tip" v-if="showTip">
        请上传
        <template v-if="fileSize">
          大小不超过
          <b style="color: #f56c6c">{{ fileSize }}MB</b>
        </template>
        <template v-if="fileType">
          格式为
          <b style="color: #f56c6c">{{ fileType.join("/") }}</b>
        </template>
        的文件
      </div>
    </el-upload>

    <!-- 文件列表 -->
    <transition-group
      class="upload-file-list el-upload-list el-upload-list--text"
      name="el-fade-in-linear"
      tag="ul"
    >
      <li
        :key="file.url"
        class="el-upload-list__item ele-upload-list__item-content"
        v-for="(file, index) in fileList"
      >
        <el-link
          @click="
            handleVideoPreview(
              downloadFileUrl + getFileDownLoadPath + file.name
            )
          "
          :underline="false"
          target="_blank"
        >
          <span class="el-icon-document">{{ file.name }}</span>
        </el-link>
        <div class="ele-upload-list__item-content-action">
          <el-link
            :underline="false"
            @click="handleDelete(index)"
            type="danger"
            v-if="showDel"
          >
            <span class="el-icon-delete">删除</span>
          </el-link>
          <el-link
            :href="downloadFileUrl + getFileDownLoadPath + file.name"
            :underline="false"
            target="_blank"
          >
            <span class="el-icon-document">下载</span>
          </el-link>
        </div>
      </li>
    </transition-group>
    <el-dialog
      :visible.sync="dialogVisible"
      title="视频预览"
      width="800px"
      append-to-body
    >
      <vue-core-video-player :src="videoSource" controls="auto" autoplay />
    </el-dialog>
  </div>
</template>
<script>
import { getToken } from "@/utils/auth";
import HLSCore from '@core-player/playcore-hls';
export default {
  name: "FileUploadVideo",
  props: {
    // 值
    value: [String, Object, Array],
    // 数量限制
    limit: {
      type: Number,
      default: 1,
    },
    // 大小限制(MB)
    fileSize: {
      type: Number,
      default: 20,
    },
    // 文件类型, 例如["mp4", "avi", "rmvb"]
    fileType: {
      type: Array,
      default: () => ["mp4", "avi", "rmvb"],
    },
    // 是否显示提示
    isShowTip: {
      type: Boolean,
      default: true,
    },
    // 是否禁用
    isDisabled: {
      type: Boolean,
      default: true,
    },
    fileDownLoadPath: {
      type: String,
      default: "/common/download?fileName=",
    },
    fileUpLoadPath: {
      type: String,
      default: "/common/upload",
    },
  },
  created() {
    this.orgName = this.$cache.local.get("orgName");
  },
  data() {
    return {
      loadProgress: 0, // 动态显示进度条
      progressFlag: false, // 关闭进度条
      number: 0,
      uploadList: [],
      //视频预览地址
      videoSource: "",
      //视频预览窗口是否显示
      dialogVisible: false,
      baseUrl: process.env.VUE_APP_FILE_SYSTEM, //process.env.VUE_APP_FILE_PREVIEW_API + "?url=",
      uploadFileUrl: process.env.VUE_APP_BASE_API, // 上传的图片服务器地址
      downloadFileUrl: process.env.VUE_APP_FILE_SYSTEM, //process.env.VUE_APP_FILE_DOWNLOAD_API, // + "/common/download?fileName="
      orgName: "",
      headers: {
        Authorization: "Bearer " + getToken(),
      },
      fileList: [],
      HLSCore
    };
  },
  watch: {
    value: {
      handler(val) {
        // console.log(123,val);
        if (val) {
          let temp = 1;
          // 首先将值转为数组
          const list = Array.isArray(val) ? val : this.value.split(",");
          // 然后将数组转为对象数组
          this.fileList = list.map((item) => {
            if (typeof item === "string") {
              item = { name: item, url: item };
            }
            item.uid = item.uid || new Date().getTime() + temp++;
            return item;
          });
        } else {
          this.fileList = [];
          return [];
        }
      },
      deep: true,
      immediate: true,
    },
  },
  computed: {
    // 是否显示提示
    showTip() {
      return this.isShowTip && (this.fileType || this.fileSize);
    },
    // 是否显示删除
    showDel() {
      return this.isDisabled == true ? false : true;
    },
    isDisBtn() {
      return this.isDisabled;
    },
    getFileDownLoadPath() {
      return this.fileDownLoadPath;
    },
    getFileUpLoadPath() {
      return this.fileUpLoadPath;
    },
  },
  methods: {
    uploadVideoProcess(event, file, fileList) {
      this.progressFlag = true; // 显示进度条
      this.loadProgress = parseInt(event.percent); // 动态获取文件上传进度
      console.log(event);
      if (this.loadProgress >= 100) {
        this.loadProgress = 100;
        setTimeout(() => {
          this.progressFlag = false;
        }, 1000); // 一秒后关闭进度条
      }
    },
    // 预览
    handleVideoPreview(file) {
      this.videoSource = file;
      this.dialogVisible = true;
    },
    // 上传前校检格式和大小
    handleBeforeUpload(file) {
      // 校检文件类型
      if (this.fileType) {
        let fileExtension = "";
        if (file.name.lastIndexOf(".") > -1) {
          fileExtension = file.name.slice(file.name.lastIndexOf(".") + 1);
        }
        const isTypeOk = this.fileType.some((type) => {
          if (file.type.indexOf(type) > -1) return true;
          if (fileExtension && fileExtension.indexOf(type) > -1) return true;
          return false;
        });
        if (!isTypeOk) {
          this.$modal.msgError(
            `文件格式不正确, 请上传${this.fileType.join("/")}格式文件!`
          );
          return false;
        }
      }
      // 校检文件大小
      if (this.fileSize) {
        const isLt = file.size / 1024 / 1024 < this.fileSize;
        if (!isLt) {
          this.$modal.msgError(`上传文件大小不能超过 ${this.fileSize} MB!`);
          return false;
        }
      }
      this.$modal.loading("正在上传文件，请稍候...");
      this.number++;
      return true;
    },
    // 文件个数超出
    handleExceed() {
      this.$modal.msgError(`上传文件数量不能超过 ${this.limit} 个!`);
    },
    // 上传失败
    handleUploadError(err) {
      this.$modal.msgError("上传文件失败，请重试");
      this.$modal.closeLoading();
    },
    // 上传成功回调
    handleUploadSuccess(res) {
      this.uploadList.push({ name: res.fileName, url: res.fileName });
      if (this.uploadList.length === this.number) {
        this.fileList = this.fileList.concat(this.uploadList);
        this.uploadList = [];
        this.number = 0;
        this.$emit("input", this.listToString(this.fileList));
        this.$modal.closeLoading();
      }
    },
    // 删除文件
    handleDelete(index) {
      this.fileList.splice(index, 1);
      this.$emit("input", this.listToString(this.fileList));
    },
    // 获取文件名称
    getFileName(name) {
      if (name.lastIndexOf("/") > -1) {
        return name.slice(name.lastIndexOf("/") + 1);
      } else {
        return "";
      }
    },
    // 对象转成指定字符串分隔
    listToString(list, separator) {
      let strs = "";
      separator = separator || ",";
      for (let i in list) {
        strs += list[i].url + separator;
      }
      return strs != "" ? strs.substr(0, strs.length - 1) : "";
    },
  },
};
</script>

<style scoped lang="scss">
.upload-file-uploader {
  margin-bottom: 5px;
}
.upload-file-list .el-upload-list__item {
  border: 1px solid #e4e7ed;
  line-height: 2;
  margin-bottom: 10px;
  position: relative;
}
.upload-file-list .ele-upload-list__item-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: inherit;
}
.ele-upload-list__item-content-action .el-link {
  margin-right: 10px;
}
</style>
